Why is my fan making this screech? It only goes away briefly. (Ik it's hard to hear in the video. It's a lot louder in person and is driving me mad.) :
New Fan whining TP07 : r/dyson
Dyson fan developed a low whining sound from the lower section (motor - Dyson AM07 Tower Fan - iFixit
Is it possible to make a completely silent bedroom/domestic fan, or is it a game of noise vs fan speed always? - Quora